/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.explorer.reporting;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.activiti.engine.ActivitiException;

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;


/**
 * @author Joram Barrez
 */
public class ReportData {

    protected String title;

    protected List<Dataset> datasets = new ArrayList<Dataset>();

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public List<Dataset> getDatasets() {
        return datasets;
    }

    public void setDatasets(List<Dataset> datasets) {
        this.datasets = datasets;
    }

    public void addDataset(Dataset dataset) {
        datasets.add(dataset);
    }

    public Dataset newDataset() {
        Dataset dataset = new Dataset();
        addDataset(dataset);
        return dataset;
    }

    public String toString() {
        try {
            return new String(toBytes(), "UTF-8");
        } catch (UnsupportedEncodingException e) {
            throw new ActivitiException("Could not convert report data to json", e);
        }
    }

    public byte[] toBytes() {
        try {
            ObjectMapper objectMapper = new ObjectMapper();
            objectMapper.configure(SerializationFeature.FLUSH_AFTER_WRITE_VALUE, false);
            objectMapper.configure(SerializationFeature.WRITE_NULL_MAP_VALUES, false);
            objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
            return objectMapper.writeValueAsBytes(this);
        } catch (Exception e) {
            throw new ActivitiException("Could not convert report data to json", e);
        }
    }

}
